CN202600247U - Zoom projection lens - Google Patents
Zoom projection lens Download PDFInfo
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- CN202600247U CN202600247U CN 201220252661 CN201220252661U CN202600247U CN 202600247 U CN202600247 U CN 202600247U CN 201220252661 CN201220252661 CN 201220252661 CN 201220252661 U CN201220252661 U CN 201220252661U CN 202600247 U CN202600247 U CN 202600247U
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Abstract
The utility model discloses a zoom projection lens which is used for a digital light processing (DLP) projector. The zoom projection lens comprises a first lens group arranged on the object side and a second lens group arranged on the image side. The first lens group comprises a first lens, a second lens and a third lens. The second lens group comprises a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens and a tenth lens. The ten lenses are sequentially arranged from the object side to the image side and are all spherical lenses made of glass materials. The zoom projection lens is high in imaging quality, low in cost, small in size, small in change of performance with temperature, simple in structure, low in sensitivity and high in mass production.
Description
Technical field
The utility model relates to a kind of projection lens, is specifically related to a kind of Zooming-projection camera lens.
Background technology
Along with development of science and technology, projection display technique is constantly progressive, and projector is widely used in every field such as commercial affairs, education, home theater.Wherein, (Digital Light Procession DLP) becomes one of main flow projector gradually, and is also increasingly high with the demand of projection lens to DLP in digital micro-mirror cell processing projector; Along with improving constantly of projector's brightness; Requirement to the temperature variation performance variation of projection lens is also increasingly high, and the temperature of a lot of camera lenses raises with the rising of projector's internal temperature in the existing techniques, and the projection performance degradation is very serious.
The utility model content
For addressing the above problem, the utility model provides the Zooming-projection camera lens of a kind of high-performance, miniaturization.
For realizing above-mentioned purpose; The utility model provides following technical scheme: a kind of Zooming-projection camera lens; Be used for DLP projector, comprise first lens combination of being located at the thing side and second lens combination of being located at the picture side, said first lens combination comprises first lens, second lens and the 3rd lens; Said second lens combination comprises the 4th lens, the 5th lens, the 6th lens, the 7th lens, the 8th lens, the 9th lens and the tenth lens; Said first lens, second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens, the 8th lens, the 9th lens and the tenth lens are arranged in order and are the spherical lens of glass material from the object side to image side.
Preferably, said first lens and the 7th lens are meniscus shaped lens, and said second lens are biconcave lens; Said the 3rd lens, the 4th lens and the tenth lens are biconvex lens; Said the 5th lens and the 6th lens are glued together and shape is complementary biconvex lens and biconcave lens; Said the 8th lens and the 9th lens are meniscus shaped lens glued together and that shape is complementary.
Preferably, said first lens, the 7th lens, the 8th lens and the 9th lens are curved month concave side to said picture side.
Preferably, the scope of said first index of refraction in lens n1 is 1.735 < n1 < 1.785, and the scope of chromatic dispersion v1 is 49 < v1 < 53; The scope of said second index of refraction in lens n2 is 1.775 < n2 < 1.825, and the scope of chromatic dispersion v2 is 45.5 < v2 < 50.5; The scope of said the 3rd index of refraction in lens n3 is 1.775 < n3 < 1.825, and the scope of chromatic dispersion v3 is 27.5 < v3 < 32.5; The scope of said the 4th index of refraction in lens n4 is 1.585 < n4 < 1.635, and the scope of chromatic dispersion v4 is 58.5 < v3 < 63.5; The scope of said the 5th index of refraction in lens n5 is 1.51 < n5 < 1.56, and the scope of chromatic dispersion v5 is 63.0 < v5 < 68.0; The scope of said the 6th index of refraction in lens n6 is 1.775 < n6 < 1.825, and the scope of chromatic dispersion v6 is 23.5 < v6 < 28.5; The scope of said the 7th index of refraction in lens n7 is 1.775 < n7 < 1.825, and the scope of chromatic dispersion v7 is 45.5 < v7 < 50.5; The scope of said the 8th index of refraction in lens n8 is 1.645 < n8 < 1.695, and the scope of chromatic dispersion v8 is 30.0 < v8 < 35.0; The scope of said the 9th index of refraction in lens n9 is 1.75 < n9 < 1.80, and the scope of chromatic dispersion v9 is 23.0 < v9 < 28.0; The scope of said the tenth index of refraction in lens n10 is 1.775 < n10 < 1.825, and the scope of chromatic dispersion v10 is 45.0 < v10 < 50.0.
Preferably, the opposite face of said the 3rd lens and the tenth lens is respectively equipped with a light diaphragm and an aperture diaphragm.
Preferably, the focal power of said first lens combination is for negative, and said first lens and second power of lens are for negative; Said the 3rd power of lens is for just.
Preferably, the focal power of said second lens combination is being for just, and said the 4th lens, the 5th lens, the 7th lens, the 8th lens and the tenth power of lens are for just; Said the 6th lens and the 9th power of lens are for negative.
Preferably, the funtcional relationship below the focal length f2 of the focal length f1 of said first lens combination and second lens combination satisfies:
Preferably, the funtcional relationship below the camera lens total length LWID of said Zooming-projection camera lens and camera lens focal length EFL satisfy:
?。
Adopt the beneficial effect of above technical scheme to be: at first; Because said lens all adopt global surface glass material; Guaranteed that the temperature variant performance variation of projection lens is very little, can satisfy projector's brightness fully and improve demand the temperature drift of projection lens; And the 5th lens in the utility model are connected with the 6th lens gummed, and the 8th lens are connected the ratio chromatism, that effectively reduces with the 9th lens gummed; Simultaneously, said the tenth lens are provided with aperture diaphragm, have effectively reduced the external diameter of the tenth lens; The 4th, in the 3rd lens settings the light diaphragm, prevent that effectively the diaphragm UV light from getting into imaging system and weakening image quality, further improves whole image quality; The 5th, the utility model image quality is high, and with low cost, volume is little, and performance is little with temperature variation, and simple in structure, and sensitivity is low, and production is high.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the aberration diagram (comprising spherical aberration, distortion, place, coma, chromatism of position and ratio chromatism, etc.) of WIDE in the utility model;
Fig. 3 is the aberration diagram (comprising spherical aberration, distortion, place, coma, chromatism of position and ratio chromatism, etc.) for TELE in the utility model;
Fig. 4 is the wave optics MTF of WIDE white in the utility model;
Fig. 5 is the wave optics MTF of TELE white in the utility model;
Fig. 6 is the SPOT figure of WIDE in the utility model;
Fig. 7 is the SPOT figure of TELE in the utility model;
Fig. 8 is the peripheral light amount ratio of WIDE and TELE in the utility model.
Wherein, the S1. aperture diaphragm S2. light diaphragm G1. first lens G2. second lens G3. the 3rd lens G4. the 4th lens G5. the 5th lens G6. the 6th lens G7. the 7th lens G8. the 8th lens G9. the 9th lens G10. the tenth lens.
Embodiment
Specify the preferred implementation of the utility model below in conjunction with accompanying drawing.
Embodiment 1
Referring to Fig. 1; Shown in legend wherein, a kind of Zooming-projection camera lens is used for DLP projector; Comprise one first lens combination of being located at the thing side and one second lens combination of being located at the picture side, said first lens combination comprises one first lens G1, one second lens G2 and one the 3rd lens G3; Said second lens combination comprises one the 4th lens G4, one the 5th lens G5, one the 6th lens G6, one the 7th lens G7, one the 8th lens G8, one the 9th lens G9 and 1 the tenth lens G10; The said first lens G1, the second lens G2, the 3rd lens G3, the 4th lens G4, the 5th lens G5, the 6th lens G6, the 7th lens G7, the 8th lens G8, the 9th lens G9 and the tenth lens G10 are arranged in order and are the spherical lens of glass material from the object side to image side.
Said first lens G1 and the 7th lens G7 are meniscus shaped lens, and the said second lens G2 is a biconcave lens; Said the 3rd lens G3, the 4th lens G4 and the tenth lens G10 are biconvex lens; Said the 5th lens G5 and the 6th lens G6 is glued together and shape is complementary biconvex lens and biconcave lens; Said the 8th lens G8 and the 9th lens G9 are meniscus shaped lens glued together and that shape is complementary.
The said first lens G1, the 7th lens G7, the 8th lens G8 and the 9th lens G9 are curved month concave side to said picture side.
The said first lens G1 refractive index n 1 is 1.745, and chromatic dispersion v1 is 50; The said second lens G2 refractive index n 2 is 1.785, and chromatic dispersion v2 is 46.5; Said the 3rd lens G3 refractive index n 3 is 1.785, and chromatic dispersion v3 is 28.5; Said the 4th lens G4 refractive index n 4 is 1.595, and chromatic dispersion v4 is 59.5; Said the 5th lens G5 refractive index n 5 is 1.52, and chromatic dispersion v5 is 64.0; Said the 6th lens G6 refractive index n 6 is 1.785, and chromatic dispersion v6 is 24.5; Said the 7th lens G7 refractive index n 7 is 1.785, and chromatic dispersion v7 is 46.5; Said the 8th lens G8 refractive index n 8 is 1.655, and chromatic dispersion v8 is 31.0; Said the 9th lens G9 refractive index n 9 is 1.76, and chromatic dispersion v9 is 24.0; Said the tenth lens G10 refractive index n 10 is 1.785, and chromatic dispersion v10 is 46.0.
The opposite face of said the 3rd lens G3 and the tenth lens G10 is respectively equipped with a light diaphragm S2 and an aperture diaphragm S1, and said aperture diaphragm S1 has effectively reduced the external diameter of the tenth lens G10, and the external diameter of said the tenth lens G10 is Φ 9mm; Said light diaphragm S2 prevents that effectively the diaphragm UV light from getting into imaging system and weakening image quality, further improves whole image quality.
The focal power of said first lens combination is for negative, and the focal power of the said first lens G1 and the second lens G2 is for negative; The focal power of said the 3rd lens G3 is for just.
The focal power of said second lens combination is being for just, and the focal power of said the 4th lens G4, the 5th lens G5, the 7th lens G7, the 8th lens G8 and the tenth lens G10 is for just; The focal power of said the 6th lens G6 and the 9th lens G9 is for negative.
Funtcional relationship below the focal length f1 of said first lens combination and the focal length f2 of second lens combination satisfy:
。
Funtcional relationship below the camera lens total length LWID of said Zooming-projection camera lens and camera lens focal length EFL satisfy:
Said the 3rd lens G3 and the 4th lens G4 are spaced apart 13.68mm; And the face that said the 4th lens G4 is relative with said the 3rd lens G3 is bigger; Light through the 3rd lens G3 and the 4th lens G4 is mild; Through changing the 3rd lens G3, the focusing and the zoom of whole projection lens realized at the interval of the 4th lens G4.
The design basis projected picture of the utility model is 60 inches, through zoom and focusing, can guarantee the image quality of 30 inches to 300 inches projected picture.
Referring to Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, Fig. 2 differs figure (comprising spherical aberration, distortion, place, coma, chromatism of position and ratio chromatism) for WIDE's in the utility model; Fig. 3 is the aberration diagram (comprising spherical aberration, distortion, place, coma, chromatism of position and ratio chromatism, etc.) for TELE in the utility model; Fig. 4 is the wave optics MTF of WIDE white in the utility model; Fig. 5 is the wave optics MTF of TELE white in the utility model; Fig. 6 is the SPOT figure of WIDE in the utility model; Fig. 7 is the SPOT figure of TELE in the utility model; Fig. 8 is the peripheral light amount ratio of WIDE and TELE in the utility model, and the utility model optical distortion is less than 1.5%.
Referring to Fig. 8, Fig. 8 is the peripheral light amount ratio of WIDE and TELE in the utility model, and the utility model largest perimeter light amount ratio is greater than 50%.
Embodiment 2
All the other are identical with said embodiment 1, and difference is that the said first lens G1 refractive index n 1 is 1.755, and chromatic dispersion v1 is 51; The said second lens G2 refractive index n 2 is 1.795, and chromatic dispersion v2 is 47.5; Said the 3rd lens G3 refractive index n 3 is 1.795, and chromatic dispersion v3 is 29.5; Said the 4th lens G4 refractive index n 4 is 1.605, and chromatic dispersion v4 is 60.5; Said the 5th lens G5 refractive index n 5 is 1.53, and chromatic dispersion v5 is 65.0; Said the 6th lens G6 refractive index n 6 is 1.795, and chromatic dispersion v6 is 25.5; Said the 7th lens G7 refractive index n 7 is 1.795, and chromatic dispersion v7 is 47.5; Said the 8th lens G8 refractive index n 8 is 1.665, and chromatic dispersion v8 is 32.0; Said the 9th lens G9 refractive index n 9 is 1.77, and chromatic dispersion v9 is 25.0; Said the tenth lens G10 refractive index n 10 is 1.795, and chromatic dispersion v10 is 47.0.
All the other are identical with said embodiment 1, and difference is that the said first lens G1 refractive index n 1 is 1.765, and chromatic dispersion v1 is 52; The said second lens G2 refractive index n 2 is 1.805, and chromatic dispersion v2 is 48.5; Said the 3rd lens G3 refractive index n 3 is 1.805, and chromatic dispersion v3 is 30.5; Said the 4th lens G4 refractive index n 4 is 1.615, and chromatic dispersion v4 is 61.5; Said the 5th lens G5 refractive index n 5 is 1.54, and chromatic dispersion v5 is 66.0; Said the 6th lens G6 refractive index n 6 is 1.805, and chromatic dispersion v6 is 26.5; Said the 7th lens G7 refractive index n 7 is 1.805, and chromatic dispersion v7 is 48.5; Said the 8th lens G8 refractive index n 8 is 1.675, and chromatic dispersion v8 is 33.0; Said the 9th lens G9 refractive index n 9 is 1.78, and chromatic dispersion v9 is 26.0; Said the tenth lens G10 refractive index n 10 is 1.805, and chromatic dispersion v10 is 48.0.
Embodiment 4
All the other are identical with said embodiment 1, and difference is that the said first lens G1 refractive index n 1 is 1.775, and chromatic dispersion v1 is 52; The said second lens G2 refractive index n 2 is 1.815, and chromatic dispersion v2 is 49.5; Said the 3rd lens G3 refractive index n 3 is 1.815, and chromatic dispersion v3 is 31.5; Said the 4th lens G4 refractive index n 4 is 1.625, and chromatic dispersion v4 is 62.5; Said the 5th lens G5 refractive index n 5 is 1.55, and chromatic dispersion v5 is 67.0; Said the 6th lens G6 refractive index n 6 is 1.815, and chromatic dispersion v6 is 27.5; Said the 7th lens G7 refractive index n 7 is 1.815, and chromatic dispersion v7 is 49.5; Said the 8th lens G8 refractive index n 8 is 1.685, and chromatic dispersion v8 is 34.0; Said the 9th lens G9 refractive index n 9 is 1.79, and chromatic dispersion v9 is 27.0; Said the tenth lens G10 refractive index n 10 is 1.815, and chromatic dispersion v10 is 49.0.
Adopt the beneficial effect of above technical scheme to be: at first; Because said lens all adopt global surface glass material; Guaranteed that the temperature variant performance variation of projection lens is very little, can satisfy projector's brightness fully and improve demand the temperature drift of projection lens; And the 5th lens in the utility model are connected with the 6th lens gummed, and the 8th lens are connected the ratio chromatism, that effectively reduces with the 9th lens gummed; Simultaneously, said the tenth lens are provided with aperture diaphragm, have effectively reduced the external diameter of the tenth lens; The 4th, in the 3rd lens settings the light diaphragm, prevent that effectively the diaphragm UV light from getting into imaging system and weakening image quality, further improves whole image quality; The 5th, the utility model image quality is high, and with low cost, volume is little, and performance is little with temperature variation, and simple in structure, and sensitivity is low, and production is high.
Above-described only is the preferred implementation of the utility model; Should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the utility model creation design; Can also make some distortion and improvement, these all belong to the protection domain of the utility model.
Claims (9)
1. a Zooming-projection camera lens is used for DLP projector, it is characterized in that, comprises first lens combination of being located at the thing side and second lens combination of being located at the picture side, and said first lens combination comprises first lens, second lens and the 3rd lens; Said second lens combination comprises the 4th lens, the 5th lens, the 6th lens, the 7th lens, the 8th lens, the 9th lens and the tenth lens; Said first lens, second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens, the 8th lens, the 9th lens and the tenth lens are arranged in order and are the spherical lens of glass material from the object side to image side.
2. Zooming-projection camera lens according to claim 1 is characterized in that, said first lens and the 7th lens are meniscus shaped lens, and said second lens are biconcave lens; Said the 3rd lens, the 4th lens and the tenth lens are biconvex lens; Said the 5th lens and the 6th lens are glued together and shape is complementary biconvex lens and biconcave lens; Said the 8th lens and the 9th lens are meniscus shaped lens glued together and that shape is complementary.
3. Zooming-projection camera lens according to claim 2 is characterized in that, said first lens, the 7th lens, the 8th lens and the 9th lens are curved month concave side to said picture side.
4. Zooming-projection camera lens according to claim 3 is characterized in that, the scope of said first index of refraction in lens n1 is 1.735 < n1 < 1.785, and the scope of chromatic dispersion v1 is 49 < v1 < 53; The scope of said second index of refraction in lens n2 is 1.775 < n2 < 1.825, and the scope of chromatic dispersion v2 is 45.5 < v2 < 50.5; The scope of said the 3rd index of refraction in lens n3 is 1.775 < n3 < 1.825, and the scope of chromatic dispersion v3 is 27.5 < v3 < 32.5; The scope of said the 4th index of refraction in lens n4 is 1.585 < n4 < 1.635, and the scope of chromatic dispersion v4 is 58.5 < v3 < 63.5; The scope of said the 5th index of refraction in lens n5 is 1.51 < n5 < 1.56, and the scope of chromatic dispersion v5 is 63.0 < v5 < 68.0; The scope of said the 6th index of refraction in lens n6 is 1.775 < n6 < 1.825, and the scope of chromatic dispersion v6 is 23.5 < v6 < 28.5; The scope of said the 7th index of refraction in lens n7 is 1.775 < n7 < 1.825, and the scope of chromatic dispersion v7 is 45.5 < v7 < 50.5; The scope of said the 8th index of refraction in lens n8 is 1.645 < n8 < 1.695, and the scope of chromatic dispersion v8 is 30.0 < v8 < 35.0; The scope of said the 9th index of refraction in lens n9 is 1.75 < n9 < 1.80, and the scope of chromatic dispersion v9 is 23.0 < v9 < 28.0; The scope of said the tenth index of refraction in lens n10 is 1.775 < n10 < 1.825, and the scope of chromatic dispersion v10 is 45.0 < v10 < 50.0.
5. Zooming-projection camera lens according to claim 4 is characterized in that, the opposite face of said the 3rd lens and the tenth lens is respectively equipped with a light diaphragm and an aperture diaphragm.
6. Zooming-projection camera lens according to claim 5 is characterized in that, the focal power of said first lens combination is for negative, and said first lens and second power of lens are for negative; Said the 3rd power of lens is for just.
7. Zooming-projection camera lens according to claim 6 is characterized in that, the focal power of said second lens combination is being for just, and said the 4th lens, the 5th lens, the 7th lens, the 8th lens and the tenth power of lens are for just; Said the 6th lens and the 9th power of lens are for negative.
8. Zooming-projection camera lens according to claim 7 is characterized in that, the funtcional relationship below the focal length f1 of said first lens combination and the focal length f2 of second lens combination satisfy:
。
9. Zooming-projection camera lens according to claim 8 is characterized in that, the funtcional relationship below the camera lens total length LWID of said Zooming-projection camera lens and camera lens focal length EFL satisfy:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220252661 CN202600247U (en) | 2012-05-31 | 2012-05-31 | Zoom projection lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220252661 CN202600247U (en) | 2012-05-31 | 2012-05-31 | Zoom projection lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202600247U true CN202600247U (en) | 2012-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220252661 Expired - Fee Related CN202600247U (en) | 2012-05-31 | 2012-05-31 | Zoom projection lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202600247U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454756A (en) * | 2012-05-31 | 2013-12-18 | 苏州智能泰克有限公司 | Zoom projection lens |
| CN106501918A (en) * | 2015-09-04 | 2017-03-15 | 中强光电股份有限公司 | Projection device and projection lens |
| CN108873268A (en) * | 2017-05-08 | 2018-11-23 | 宁波舜宇车载光学技术有限公司 | Optical lens |
-
2012
- 2012-05-31 CN CN 201220252661 patent/CN202600247U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454756A (en) * | 2012-05-31 | 2013-12-18 | 苏州智能泰克有限公司 | Zoom projection lens |
| CN106501918A (en) * | 2015-09-04 | 2017-03-15 | 中强光电股份有限公司 | Projection device and projection lens |
| CN106501918B (en) * | 2015-09-04 | 2019-07-23 | 中强光电股份有限公司 | Projection device and projection lens |
| CN108873268A (en) * | 2017-05-08 | 2018-11-23 | 宁波舜宇车载光学技术有限公司 | Optical lens |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20140531 |